package com.ma.gulimall.order.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ma.gulimall.order.dao.OrderItemDao;
import com.ma.gulimall.order.entity.OrderEntity;
import com.ma.gulimall.order.entity.OrderItemEntity;
import com.ma.gulimall.order.entity.OrderReturnReasonEntity;
import com.ma.gulimall.order.service.OrderItemService;
import com.ma.gulimall.utils.PageUtils;
import com.ma.gulimall.utils.Query;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;

//@RabbitListener(queues = {"hello-java-queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * queues:声明需要监听的所有的队列
     * Body:'{"id":1,"name":"哈哈","sort":null,"status":null,"createTime":1635685868188}'
     * 类型：class org.springframework.amqp.core.Message
     * 参数可以写一下类型
     * 1、Message:message,原生消息详细信息。头+体
     * 2、T<发送的消息的类型>    OrderReturnReasonEntity content
     * 3、 Channel channel  当前传输数据的通道
     *
     * Queue：可以很多人都来监听。只要收到消息，队列删除消息，而且只能有一个收到此消息
     * 场景：
     *      1）、订单服务启动多个:同一个消息，只能有一个客户端收到
     *      2）、只有一个消息完全处理完，方法运行接束，我们就可以接收下一个消息
     */
    @RabbitHandler
    public void receiveMessage(Message message,
                               OrderReturnReasonEntity content,
                               Channel channel) {
        byte[] body = message.getBody();
        //channel 内按顺序自增的
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag" + deliveryTag);
        System.out.println("接收到消息..." + message + "内容：" + content);

        //签收货物，非批量签收
        try {
            if(deliveryTag % 2 == 0){
                //收获
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了货物.."+deliveryTag);
            }
            else {
                //退货 requeue==false >丢     requeue==true > 发回服务器，重新入队
                //basicNack(long deliveryTag, boolean multiple, boolean requeue)
                channel.basicNack(deliveryTag,false,true);
                //basicReject(long deliveryTag, boolean requeue)
                //channel.basicReject();
                System.out.println("没有签收货物.."+deliveryTag);
            }
        } catch (IOException e) {
            //网络中断
            e.printStackTrace();
        }
    }
    @RabbitHandler
    public void receiveMessage2(OrderEntity order) {
        System.out.println("接收到消息..." + order);
    }

}